<template>
  <div class="login_container">
    <div class="login_box">
      <div class="avatar_box">
        <img src="../assets/logo.png" alt="" />
      </div>
      <!-- 登录表单区域 -->
      <el-form :rules="LoginFormRules" class="login_from" ref="LoginFormRef" :model="LoginForm" label-width="0px">
        <!-- 用户名 -->
        <el-form-item prop="username">
          <el-input v-model="LoginForm.username" prefix-icon="iconfont icon-user"></el-input>
        </el-form-item>
        <!-- 密码 -->
        <el-form-item prop="password">
          <el-input type="password" v-model="LoginForm.password" prefix-icon="iconfont icon-3702mima"></el-input>
        </el-form-item>
        <el-form-item class="btns">
          <el-button type="primary" @click="login">登录</el-button>
          <el-button type="info" @click="resetLoginFrom">重置</el-button>
        </el-form-item>

      </el-form>
    </div>
  </div>
</template>

<script>
export default {
    data() {
        return {
            // 这是登陆表单数据绑定对象
           LoginForm:{
               username:'admin',
               password:'123456'
           },
           // 这是表单验证规则对象
           LoginFormRules:{
               username:[
                   { required: true, message: '请输入用户名', trigger: 'blur' },
                   { min: 3, max: 10, message: '长度在 3 到 10 个字符', trigger: 'blur' }
               ],
               password:[
                    { required: true, message: '请输入密码', trigger: 'blur' },
                    { min: 6, max: 16, message: '长度在 6 到 15 个字符', trigger: 'blur' }
               ],
           }
        }
    },
    methods:{
       // 点击重置按钮 重置表单
    resetLoginFrom() {
        // console.log(this);
        this.$refs.LoginFormRef.resetFields()
    },
    login() {
        // 表单域验证
        this.$refs.LoginFormRef.validate(async valid =>{
            // 表单验正 错误 不发起请求
            if(!valid) return 
            // 发起请求
            const {data:res} = await this.$http.post("login",this.LoginForm)
            console.log(res);
            if(res.meta.status !== 200) return this.$message.error('登录失败')
            this.$message.success('登录成功')


            // 1.将登录成功之后得token,保存到客户端得sessionStorage
            // 1.2 token 只应在当前网站期间打开 将存储在session
            window.sessionStorage.setItem('token',res.data.token)
            // 2.通过编程式导航跳转到后台主页
            this.$router.push('/home')
        })
    }
    }
};
</script>

<style scoped lang="less">
.login_container {
  background-color: #2b4b6b;
  height: 100%;
}
.login_box {
  width: 450px;
  height: 300px;
  background-color: #fff;
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);

  .avatar_box {
    width: 130px;
    height: 130px;
    border: 1px solid #eee;
    border-radius: 50%;
    padding: 10px;
    box-shadow: 0 0 10px #ddd;
    position: absolute;
    left: 50%;
    transform: translate(-50%, -50%);
    background-color: #fff;
    img {
      width: 100%;
      height: 100%;
      border-radius: 50%;
      background-color: #eee;
    }
  }
}
.login_from {
    width: 100%;
    padding: 0 10px;
    bottom: 0;
    position: absolute;
    box-sizing: border-box;
}
.btns {
    display: flex;
    justify-content: flex-end;
}
</style>
